Electromagnetically-operated switch gear



Oct. 28 1924.

1,513.29!) E. VOLKERS ELECTROMAGNETICALLY OPERATED SWITCH GEAR FiledJune 30, 1924 Ern/Z Z l/o k Patented Oct. 28, 1324.

amazes UNITED, STATES EMIL VOLKERS, F IBERLIN-LANK'WITZ, GERMANY.

ELEGTBOMAGNETICALLY-OPEBATED SWITCH GEAR.

Application filed June 80, 1924. Serial No. 728,408.

Lankwitz, Germany, 27' Corneliusstrasse,

have invented certain new and useful Improvements in or Relating toElectromagnetically-Operated Switch Gears, of which thejfollowing is aspecification.

The present invention relates to a driving mechanism, more particularlya switch gear, operated by an electromagne't; and it consists in aconstruction which requires only a small space and in which theelectromagnet effects the progressive forward movement of the switchgear or other element to be driven in a simple and efi'ective manner.

According to the invention the electromagnet, which is mounted so as tooscillate, is drawn, when energized, towards'its armature, which isprevented from moving in the direction of the magnetic attraction, and,

taking the armature with it, swings forward to effect the onwardmovement of the gear.

The accompanying drawing shows an example of a construction according tothe invention.

Figure 1 is a side and Figure 2 a plan view.

The electromagnet l is secured to a lever 2 which can swing about anaxle 3. The armature 4 is connected to the electromagnet 1 by a spring5. The element to be driven, here shown as a ratchet wheel 6, is rotatedunder the action of the weight of the electromagnet l by means of a pawl7. In the normal position a contact 8, secured to the armature, engageswith a fixed contact 9. The circuit of the current from a battery 12 isclosed in this position and the magnet 1 energized. The armature cannot,

however, be inoved towards the pole 11 of the electromagnet because thearmature is held fixed by the contact 9 and the electromagnet is,consequently, moved towards its armature. The momentum acquired by therapid movement of the electromagnet causes the parts to take up. theposition in which the armature a and the pawl 7 are shown by dot anddash lines. I

The current is interrupted when the pole ll engages with the armature 4.During this oscillation of the electromagnet the ratchet wheel isprevented from moving by a fixed pawl 10 engaging in the teeth or theratchet wheel. The electromagnetthen again falls by its own-weight, thepawl 7 effecting the forward movement of the ratchet 6 in the directionshown by the arrow.

The electromagnet is again in its normal positlon with the contact 8closed and the process is repeated.

If several switch gears are to be driven simultaneously, they can beelectrically connected and the interruption of the current for all thegears efi'ected at only one member. Interrupting devices are,consequently, unnecessary at the other switches.

I claim:

1. An electro-magnetic driving mechanism, comprising an oscillatorydriving element; an electro-magnet secured to said element to move inunison therewith; an armature loosely related to the magnet; fixed andmovable contacts for closing a circuit through the magnet, the movablecontact being carried by the armature so that the latter will be heldagainst movement toward the magnet when said circuit is closed, wherebythe energization of said magnet will cause it to move toward saidarmature and to interrupt the circuit at the conclusion of suchmovement, said magnet moving automatically in the opposite directionwhen such interruption takes place; and a driven element engaged by saiddriving element to be operated thereby during and consequent upon themovements of the magnet.

2. An electro-magnetic driving mechanism, comprising an oscillatorydriving element; an electro-magnet secured to said element to move inunison therewith; an armature for the magnet loosely connected to thedriving element; a driven element engaged by said driving element andadapted to be operated thereby; means for causing said magnet, uponenergization, to be drawn toa ward said armature; and means foractuating said armature at the conclusion of the movement of the magnetto de-energize the latter, whereby said driving element will be causedto intermittently operate said driven element.

3. An electro-magnetic driving mechanism, comprising an oscillatorydriving element; an electro-magnet secured to said element to move inunison therewith; an armature for the magnet; a connecting springbetween the magnet and armature to constitute a yielding support for thelatter; fixed and movable contacts for closing a circuit "through themagnet, the movable contact being carried by the armature so as to causethe same to be held against movement toward the magnet when said circuitis closed, whereby the energization of said magnet will cause it to moveagainst said armature and ultimately separate said contacts withresultant interruption of the circuit; and a driven element engaged bysaid drivin element to be operated thereby during an con sequent uponthe movements of the magnet.

4. An electro-magnetioi driving mechanism, comprising an oscillatorylever; a

driving pawl carried thereby; an electromagnet mounted on said lever tomove in unison therewith; an armature for the magnet; 9. connectingspring between the magnet and armature to constitute ayielding supportfor the latter; fixed and movable contacts for closin a circuit throughthe magnet, the movab e contact being carried by the armature so as tocause the same to be held against movement toward the magnet when saidcircuit is closed, whereby the energization of said magnet will cause itto move against said armature and ultimately separate said contacts withresultant interruption of the circuits; and a toothed driven elementengaged by said pawl to be driven step by step during the oscillationsof lever.

In testimony whereof I have aflixed my signature in presence of twowitnesses.

EMIL VOLKERS. Witnesses:

. T. FOLSCHEL,

E. HoL'rzEnMAN.

the

